Ok I have this area on the north side of my house. I'm going to remove the grass and rock it in. Here is the problem I want to put in some more perennials along the fence. So far I have some caldiums, ferns, ees, and a clementis at the end where there is some sunlight. What else should I use or should I just buy some more ferns and move some more ees into this space? I do not want to have to go in there often and I never want to take the weedeater in there again. This is a narrow 3-4 foot area. and it is totally fenced in.